quote:The tank looks really good inside now but has some minor rust in it. It mainly looks like flash rust but not 100% sure, so I have been contemplating using Muriatic Acid and then a tank sealer or liner.
My tank is in similar shape and I considered sealing it as well, but after doing the research and talking with a local shop that seals tanks I decided not to seal it. The shop (and one or two of the mfgr websites) stated that sealing is only a last resort to repair rusty tanks with scale and pinholes. It's not recommended for tanks in great shape. Despite what the manufactures say about their product being impervious to modern fuel and it's addititives, there are countless stories of the stuff flaking off and clogging fuel filters, lines and pickups. Mabey the result of the prep and application rather than the product. But if your tank has survived fine for the past 30 years, there's no reason to think it won't survive another 30 years if you continue the same practice of keeping it full of fresh gas.